//: C21:MemFun1.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Applying pointers to member functions
#include "../purge.h"
#include <algorithm>
#include <vector>
#include <iostream>
#include <functional>
using namespace std;

class Shape
{
public:
    virtual void draw() = 0;
    virtual ~Shape() {}
};

class Circle : public Shape
{
public:
    virtual void draw() {
        cout << "Circle::Draw()" << endl;
    }
    ~Circle() {
        cout << "Circle::~Circle()" << endl;
    }
};

class Square : public Shape
{
public:
    virtual void draw() {
        cout << "Square::Draw()" << endl;
    }
    ~Square() {
        cout << "Square::~Square()" << endl;
    }
};

int main()
{
    vector<Shape*> vs;
    vs.push_back(new Circle);
    vs.push_back(new Square);
    for_each(vs.begin(), vs.end(),
             mem_fun(&Shape::draw));
    purge(vs);
} ///:~
